Capsule with optimized weakened material region and system for preparing edible products including said capsules

ABSTRACT

A capsule ( 1 ) having at least one first construction element ( 2 ) configured in a container-like shape, and a second construction element ( 3 ) configured in a lid-like shape, adapted so as to contain an individual portion of an edible substance. The second construction element ( 3 ) presents a passageway wall ( 4 ) provided as a recess region and surrounded in at least most part of respective perimeter by a weakened material region ( 41 ) provided as a reduction of thickness in the upstream side and downstream side of said passageway wall ( 4 ). The capsule is used with an apparatus for preparing edible products comprising at least one brewing device ( 10 ) presenting injection means ( 13 ) adapted so that exert a mechanic pressure upon the passageway wall ( 4 ) on a region of the passageway wall ( 4 ) opposite to the region of weakened material region ( 41 ).

This application is a National Stage of International Application No.PCT/PT2017/050031 filed Dec. 27, 2017, claiming priority based onPortuguese Patent Application No. 109814 filed Dec. 29, 2016.

FIELD OF THE INVENTION

The present invention refers to the field of the capsules for preparingedible products including aromatic beverages, such as for exampleespresso coffee, tea and similar.

The present invention further refers to a system for preparing edibleproducts based upon capsules.

BACKGROUND OF THE INVENTION

The prior art includes several solutions relating to systems forpreparing beverages, such as for example machines for preparingbeverages including espresso coffee, tea and similar, based uponcapsules containing a single portion of edible substance and provided sothat are collected inside of a brewing device. Said brewing device isadapted so as to inject a pressurized fluid flow through an upstreamside of capsule, and to collect the resulting beverage from a downstreamside of capsule.

In particular in the case of capsules provided in a substantially rigidmaterial and construction structure, despite being retained by means ofpressured engagement inside of a respective brewing device, this type ofcapsules can slip a direction transversal to the prevailing flowdirection, notably in a rotation movement around its axial axis, inparticular in case that the pressurized water injection is not done bymeans of penetration of the capsule envelope. In fact, in the case ofbrewing devices with multiple pressurized water injection outlets, thereis the need to ensure that a capsule of this type is retained inreliable manner, and eventually positioned on a given angular position,inside of a respective brewing device.

The document EP 2287090 B1 discloses a capsule comprising a containerpart with a base wall that presents a structure that forms a reducedthickness of entry wall of the pressurized fluid. In particular, saidstructure forms a continuous annular recess portion of radius R1 wherethere is provided a plurality of injection holes.

The document EP 2394932 B1 discloses a capsule similar to that of theaforementioned document, whereby in this case there is provided aweakened material region designed such that breaks at least partiallyunder the pressure of a pressurized liquid. Moreover, the body of thecapsule is made of plastic or from a plastic based material.

The document EP 2560897 B1 discloses a capsule comprising a containerpart with a base wall that presents a weakened material zone thatdefines a wall part that can be broken, and a portion of greaterthickness of said base wall around which the wall part that can bebroken turns.

The document EP 2757057 A1 discloses a capsule that presents a groovethat surrounds a central region that presents at least perforation zonewith perforations that provide an entry of hot water into the interiorof capsule.

The document WO 2015/002562 A1 submitted by the author of the presentapplication discloses a capsule comprising a lid-like element thatpresents at least one engagement groove disposed such that is surroundedby, or itself surrounds, a zone of said second construction elementadapted for fluid passage.

GENERAL DESCRIPTION OF THE INVENTION

The objective of the present invention is to provide a capsule in asubstantially rigid construction, for collection of a single portion ofan edible substance, in particular adapted for preparing edibleproducts, including beverages, inside of a respective brewing device,and that provides sufficient oxygen barrier and a reliable opening topressurized flow through a respective upstream oriented wall andpresenting a weakened material region.

In particular, this objective is attained by means of a capsule thatpresents a lid-like construction element, presenting a wall part and aflow passageway wall provided as a recess region of circular shape inthe central region of said wall part and presenting a smaller wallthickness, whereby said passageway wall is delimited along at least partof a circumferential alignment by a weakened material region adapted sothat said passageway wall breaks in this zone and swivels around part ofsaid circumferential alignment.

The capsule according to the invention comprises a first constructionelement configured in a container-like form, and a second constructionelement configured in a lid-like form and adapted for entry of apressurized fluid preferentially without holing of a respective exteriorenvelope, and adapted for joint assembly so as to provide an interiorvolume for collection of a portion of at least one edible substance,including coffee, tea and similar.

It is preferred when the upstream oriented surface of capsule presents arecess region surrounding the passageway wall and an intercalary regionbetween these.

It is preferred when said recess region develops from a secondcircumferential alignment in the proximity of said passageway wall andso that results an intercalary region between said recess region andsaid passageway wall, whereby said recess region presents a recess wallthickness (e₅) that is smaller than the prevailing wall thickness (e₃₁),and bigger than the passageway wall thickness (e₄) of said passagewaywall, so that structurally reinforces the surrounding region of saidpassageway wall and provides retention surfaces for an engagementelement provided on said brewing device.

It is preferred when at least most part, preferentially the totality, ofrecess wall thickness (e₅) of said recess region develops betweentransversal planes in the proximity downstream of the transversal planesthat delimit the passageway wall thickness (e₄) of said passageway wall,so that at least most part of said recess wall thickness (e₅) isprovided downstream of said passageway wall thickness (e₄).

It is preferred when said passageway wall is delimited by a firstcircumferential alignment that presents a first diameter (d₁) smallerthan 0.35 times the diameter (d) of said flow entry wall part.

It is preferred when said recess region is delimited on a respectivedistal side by a circumferential alignment presenting a second diameter(d₂), whereby said second diameter (d₂) is at least 1.2 times bigger,preferentially at least 1.4 times bigger, and at most 2.5 times bigger,preferentially at most 2 times bigger than said first diameter (d₁).

It is preferred when the radial extension of said recess region is atleast approximately similar, preferentially bigger than 0.8 times andsmaller than 1.2 times the radial extension of said intercalary region.

It is preferred when said recess region presents a substantiallypolygonal transversal section defining at least three interior surfaces,preferentially five interior surfaces, and presenting a depth between 1and 3 mm, preferentially between 1.5 and 2.5 mm, relative to theexterior surface of said second construction element, and a radialdimension between 1 and 3 mm, preferentially between 1.5 and 2.5 mm.

It is preferred when said intercalary region presents an intercalarywall thickness (e₆) that is bigger than the passageway wall thickness(e₄) of said passageway wall and bigger than the recess wall thickness(e₅) of said recess region, preferentially is at least approximatelysimilar to said prevailing wall thickness (e₃₁), thereby structurallyreinforcing the region surrounding said weakened material region andproviding a support surface to a sealing element provided on saidbrewing device.

It is preferred when said intercalary region presents an intercalarywall thickness (e₆) that develops between planes transversal to theaxial direction upstream and downstream of the transversal planes thatdelimit said passageway wall thickness (e₄) and recess wall thickness(e₅).

It is preferred when said intercalary region comprises a seat regionthat develops in the upstream oriented surface of said flow entry wallpart along at least most part of the radial extension between saidpassageway wall and said recess region, whereby said seat region isadapted so that provides a seat surface to a sealing element provided onsaid brewing device.

It is preferred when said seat region presents a seat wall thickness(e₆₁) that is bigger than the passageway wall thickness (e₄) of saidpassageway wall, thereby improving the opening of said weakened materialregion as impinged by an upstream pressurized flow.

It is preferred when said seat region presents a seat wall thickness(e₆₁) that is bigger than the recess wall thickness (e₅) of said recessregion, preferentially presents a wall thickness that is at leastapproximately similar to said prevailing wall thickness (e₃₁).

It is preferred when said intercalary region presents a guidingprojection along said first circumferential alignment so that delimitssaid seat region relative to said passageway wall, whereby said guidingprojection projects beyond the upstream oriented exterior surface ofsaid flow entry wall part, so that provides a conduction surface that isadjacent and substantially orthogonal or oblique relative to the surfaceprovided by said seat region.

It is preferred when said passageway wall presents a projection elementthat develops upstream, whereby said projection element develops alongan extension beyond the plane defined the upstream oriented surface ofsaid flow entry wall part, so that can be impinged by a flow injectionpart of said brewing device.

It is preferred when said projection element is provided only on oneside of said passageway wall relative to said axial axis (X),preferentially in the proximity of perimeter of said passageway wall.

It is preferred when said projection element develops along an extensioncomprised between 10 to 40°, preferentially between 15 and 35°, of thecircumferential alignment that develops in at least approximatelyparallel manner relative to the circumferential alignment defined by theexterior limit of said passageway wall.

It is preferred when said projection element is provided in theproximity of the perimeter and on the side that develops in the weakenedmaterial region presenting a smaller thickness.

Another objective of the present invention is to provide a system forpreparing edible products based upon capsules, presenting capsules and abrewing device adapted so as to improve the entry of flow into saidcapsules, in particular opening of a passageway wall presenting aweakened material region.

An associated objective is to disclose a system that provides animproved concentration of pressurized flow on a passageway wallpresenting a weakened material region

It is preferred when said upstream actuation part presents an engagementelement provided as a protuberance that develops at a distance from saidinjection means and adapted so that engages on said recess regionprovided on said flow entry wall part, so as to thereby retain saidcapsule with relation to a sealing element provided so that surroundssaid injection means.

It is preferred when said engagement element is provided so thatdevelops along an extension of arch of circumference that is smallerthan 20°, preferentially smaller than 15°, and bigger than 3°,preferentially bigger than 5°.

It is preferred when said sealing element is provided with a ring shapeand adapted so that sits on the seat region of said intercalary regionbetween said passageway wall and recess region.

It is preferred when said sealing element is provided as a projectionthat develops along the axial direction with a smaller extension thanthe extension of said engagement element.

DESCRIPTION OF THE FIGURES

The present invention shall be hereinafter explained in greater detailbased upon the description of preferred embodiments thereof and theFigures attached.

The Figures show, in simplified schematic representations:

FIG. 1: plan view (top) and side cut (bottom) of a capsule (1) accordingto prior art;

FIG. 2: plan view (top) and side cut (bottom) of a capsule (1) accordingto present invention;

FIG. 3: plan view of a first embodiment of a second construction element(3) in a capsule (1) according to the invention;

FIG. 4: side cut view (top) and respective detail of central region(bottom) of second construction element (3) according to FIG. 3;

FIG. 5: plan view of a second embodiment of second construction element(3) in a capsule (1) according to the invention;

FIG. 6: side cut view (top) and respective detail of central region(bottom) of second construction element (3) according to FIG. 5;

FIG. 7: side cut views of a brewing device (10) open (left-hand side)and closed (right-hand side) and capsule (1) according to the presentinvention;

FIG. 8: front view of the upstream actuation part (11) of a brewingdevice (10) comprised in a system according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

As can be observed in FIG. 1, a capsule of the type of capsule (1)includes a first construction element (2) configured in a container-likeshape and a second construction element (3) configured in a lid-likeshape. Said first and second construction elements (2, 3) are providedas substantially rigid, for example in a plastic material, and adaptedfor joint assembly along a common central axis (X) of said capsule (1),thereby providing an interior volume adapted for collection of a singleportion of at least one edible substance, such as for example roastedground coffee beans.

Optionally, there can be provided a recess region (5) on theupstream-oriented side, of annular shape and eventually presenting aweakened material region.

As can be observed in FIG. 2, in the case of a capsule (1) according tothe present invention, a second construction element (3) presents a topentry wall part (31) that presents a disk-like general shape and apassageway bottom wall (4) that is provided in a region having apassageway side wall that is recessed relative to the exterior surfaceplanes of said entry wall part (31).

In the case of a first embodiment of said capsule (1), said passagewaywall (4) presents a passageway wall thickness (e₄) that corresponds to areduction of thickness of the prevailing wall thickness (e₃₁) of saidentry wall part (31), provided in a region of circular shape and on bothsides of said entry wall part (31), so that said passageway wall (4)develops in a intercalary plane between the exterior surfaces orientedupstream and downstream of said entry wall part (31). Moreover, it ispreferred when at least the downstream surrounding walls, preferentiallyalso the upstream surrounding walls of said passageway wall (4), developalong an oblique direction relative to the direction of said axial axis(X).

Said passageway wall part (4) presents a weakened material region (41)that develops along at least most part of said first circumferentialalignment and that is adapted so that breaks under a given upstreampressure.

The second construction element (3) of said capsule (1) further presentsa recess region (5) provided on the upstream oriented side of said entrywall part (31), whereby said recess region (5) develops from a secondcircumferential alignment in the proximity of said passageway wall (4)and so that results an intercalary region (6) between said recess region(5) and said passageway wall (4). The intercalary region (6) maycomprise two planar regions (61, 62) of different thicknesses, asillustrated in FIG. 6. The recess region (5) presents a recess wallthickness (e₅) that is smaller than the prevailing wall thickness (e₃₁),and bigger than the passageway wall thickness (e₄) of said passagewaywall (4), so that said passageway wall (4) is deflected under thepressurized flow so that breaks said weakened material region (41).

The second construction element (3) of said capsule (1) further presentsan intercalary region (6) that presents an intercalary wall thickness(e₆) that is bigger than the passageway wall thickness (e₄) of saidpassageway wall (4) and bigger than the recess wall thickness (e₅) ofsaid recess region (5), preferentially is at least approximately similarto said prevailing wall thickness (e₃₁), thereby improving thetransmission of structural resistance from said recess region (5) and tosaid weakened material region (41).

According to an inventive aspect of a capsule (1) according to thepresent invention, said passageway wall (4) presents a passageway wallthickness (e₄) that is smaller than said prevailing wall thickness(e₃₁), and respective weakened material region (41) is provided by meansof localized reduction of said passageway wall thickness (e₄), so thatresults a region of weakened thickness (e₄₁) along said firstcircumferential alignment, thereby improving the opening of saidpassageway wall (4) when impinged by an upstream pressurized flow—seeFIGS. 3 and 4.

Moreover, said passageway wall (4) is provided as a reduction of saidprevailing wall thickness (e₃₁) in a region of circular shape andcentred relative to the centre (X) of said entry wall part (31), andsaid weakened material region (41) is provided between said prevailingwall thickness (e₃₁) and said passageway wall thickness (e₄).

According to an inventive aspect, said flow passageway wall (4) presentsa projection element (7) that extends upstream, whereby said projectionelement (7) develops along an extension beyond the plane defined by theupstream oriented surface of said entry wall part (31), so that saidprojection element (7) can be impinged by a flow injection part (13) ofsaid brewing device (10) as the latter moves in the closing movement,and thereby generates a deflection moment upon said weakened materialregion (e₄₁)—see FIGS. 3 to 6.

It is thus provided an additional element of mechanic pressure upon theweakened material region (41) of said passageway wall (4), therebycontributing to a reliable opening thereof.

It is preferred when said projection element (7) is provided only on oneside of said flow passageway wall (4) relative to said axial axis (X),preferentially in the proximity of perimeter of said flow passagewaywall (4).

It is further preferred when said projection element (7) develops alongan angular extension comprised between 10 to 40°, preferentially between15 to 35°, of a circumferential alignment that develops in at leastapproximately manner relative to the circumferential alignment definedby the exterior limit of said passageway wall (4).

It is further preferred when said projection element (7) is provided inthe proximity of perimeter and on one side where develops said weakenedmaterial region (41) presenting a smaller wall thickness.

According to a preferred embodiment—see FIGS. 3 and 4, and 5 and 6—, itis preferred when said passageway wall (4) presents a passageway wallthickness (e₄) that corresponds to a thickness reduction of prevailingwall thickness (e₃₁) of said flow entry wall part (31), provided in aregion of circular shape and on both side of said flow entry wall part(31), so that said passageway wall (4) develops in an intercalary planebetween upstream and downstream oriented exterior surfaces of said flowentry wall part (31).

It is further preferred when said passageway wall (4) is provided closerto the upstream oriented surface than from the downstream orientedsurface of said flow entry wall part (31).

According to another inventive aspect—see FIGS. 3 to 6—said weakenedmaterial region (41) is provided as the region between two recesses inopposite sides of said passageway wall (4), whereby said recessespresents at least one of different shape and different dimensionrelative to the remaining passageway wall (41).

It is preferred when said weakened material region (41) is provided asthe region between two recesses in opposite sides of said passagewaywall (4), developing along a circumferential alignment of at leastapproximately similar dimension, whereby said recesses distant from eachother in the closest region between each other in the valuecorresponding to said weakened thickness (e₄₁).

It is preferred when said weakened material region (41) is provided asthe region between two recesses in opposite sides of said passagewaywall (4), whereby said recesses presents different depths relative tothe surface planes of the respective sides of said passageway wall (4),and said maximum depths develop in different projections along planesparallel to said axial axis (X).

It is further particularly preferred when said weakened material region(41) is provided as the region between two recesses in opposite sides ofsaid passageway wall (4), whereby the recesses disposed on the upstreamside develop at least partially on a more proximal region than therecesses disposed on the upstream oriented side, with reference to saidaxial axis (x) of said passageway wall (4).

According to another inventive aspect—see FIGS. 5 and 6—, said weakenedmaterial region (41) is provided as the region between two recesses inopposite sides of said passageway wall (4) and presenting at least oneoblique surface relative to the direction of said axial axis (X),whereby in the region closest to each other said recesses configure twosurfaces oblique relative to the direction of said axial axis (X), andthat develop at least approximately parallel along a preferentialrupture extension that presents said weakened thickness (e₄₁) anddevelops in oblique manner relative to the direction of said axial axis(X).

It is preferred when said passageway wall (4) is surrounded downstreamby a wall that extends beyond the plane defined by the wall thickness(e₃) of said flow entry wall part (31) so that deflects the pressurizedflow through the weakened material region (41), and in that at leastsaid downstream surrounding wall, preferentially also an upstreamsurrounding wall of said passageway wall (4), develop along an obliquedirection relative to the direction of said axial axis (X).

It is preferred when said weakened material region (41) is providedalong at least most part, preferentially the totality, of acircumferential perimeter and presents a first (e₄₁) and a second (e₄₂)weakened thickness, whereby said first weakened thickness (e₄₁) issmaller than said second weakened thickness (e₄₂).

It is further preferred when said first weakened thickness (e₄₁)develops along a bigger extension than said second weakened thickness(e₄₂).

FIG. 7 represents a system according to the present invention comprisinga capsule (1) adapted for containing an edible substance, for exampleroasted and ground coffee beans, and a brewing device (10) adapted forbeing part of an apparatus for preparing edible products, such as forexample a coffee machine.

Said brewing device (10) presents an upstream part (11) adapted forinjection of pressurized flow, and a downstream part (12) adapted forcollection of the resulting edible product.

As one can observe in FIG. 8, the upstream part (11) presents, along theradial direction, injection means (13), a sealing element (14) providedin the proximity of said injection means (13) and further an engagementelement (15) provided adjacent to said sealing element (14).

According to an inventive aspect, said injection means (13) are providedas a projection extending downstream and adapted so that exerts amechanic pressure upon part of said passageway wall (4) in the proximityof the weakened material region (41), so that said passageway wall (4)swivels downstream around a region of said passageway wall (4) that isopposite to said weakened material region (41) as a result of saidmechanic pressure—see drawing on the right-hand side of FIG. 7.

Moreover, said injection means (13) are provided as a projection adaptedso that at least part, preferentially at least most part of respectiveextension of projection develops inside of the recess formed by saidpassageway wall on said flow entry wall part (31), when the brewingdevice (10) is in a closed position.

It is preferred when said injection means (13) are provided as aprojection adapted so that exerts a mechanic pressure, preferentially inasymmetric manner, upon part of said passageway wall (4).

It is further preferred when said injection means (13) are provided as aprojection adapted so that exerts a mechanic pressure upon a projectionelement (7) provided so that extends upstream above and higher than saidpassageway wall (4)—see FIGS. 3 to 6.

The invention claimed is:
 1. A capsule (1) for preparing an edibleproduct on a brewing device (10), said capsule having an axial axis (X)defining an axial direction and being round in cross section to saidaxial axis (X), the capsule comprising: a first construction element (2)configured as a container with a side wall, a closed bottom wall and anopen top, and comprising an interior collection volume for holding asingle portion of an edible substance, and a second construction element(3) configured as a lid that is structured to sealingly cover said opentop and thereby confine said interior collection volume of said firstconstruction element (2), and to provide an entry flow passageway to theinterior collection volume of said first construction element (2),wherein said second construction element (3) comprises a flow entry wallpart (31) that has a disk shape with an upstream surface, a downstreamsurface, and a prevailing wall thickness (e31) between two planes thatare on a respective one of the upstream and downstream surfaces and aretransverse to the axial axis (X) of said capsule (1) when covering theopen top of the first construction element (2), wherein said flow entrywall part (31) comprises a rigid material and has a passageway providedwith a circular shape, a passageway bottom wall (4) having an upstreamoriented side and a downstream oriented side in the axial direction, anda passageway side wall disposed centered relative to the axial axis (X)of said capsule (1), wherein said passageway bottom wall (4) comprises aweakened material region (41) formed circumferentially within saidpassageway bottom wall (4) and adapted to break under a given upstreamflow pressure, wherein said weakened material region (41) corresponds toa region between a first recess provided on the upstream oriented sideof said passageway bottom wall (4), and a second recess provided on thedownstream oriented side of said passageway bottom wall (4), and whereineach one of said recesses is formed circumferentially along atransversal direction from said axial axis (X) and extends into saidpassageway bottom wall (4) in said axial direction so that a distancebetween said recesses, in the nearest region between themselves, is avalue corresponding to a weakened thickness (e₄₁).
 2. The capsule (1)according to claim 1, wherein said weakened material region (41) isprovided as a region between two recesses in mutually opposing sides ofsaid passageway bottom wall (4), whereby said recesses present at leastone of different shape and different dimension.
 3. The capsule (1)according to claim 1, wherein said weakened material region (41) isprovided as the region extending between two recesses on said passagewaybottom wall (4) that present different maximum depths relative to thesurface planes of respective sides of said passageway wall (4).
 4. Thecapsule (1) according to claim 1, wherein said weakened material region(41) is provided as the region extending between two recesses on saidpassageway bottom wall (4) that present maximum depths that develop indifferent planes parallel to said axial axis (X) of said capsule (1). 5.The capsule (1) according to claim 1, wherein said weakened materialregion (41) is provided as the region between two recesses disposed inopposing sides of said passageway bottom wall (4) and presenting atleast one oblique surface relative to the direction of said axial axis(X) of said capsule (1), wherein in the region closer to each other saidrecesses each comprise two oblique surfaces relative to the direction ofsaid axial axis (X) of said capsule (1), and wherein said obliquesurfaces develop at least approximately parallel along a ruptureextension that presents said weakened thickness (e₄₁) and that developsin an oblique manner relative to the direction of said axial axis (X) ofsaid capsule (1).
 6. The capsule (1) according to claim 1, wherein saidweakened material region (41) is provided as the region between tworecesses on opposite sides of said passageway bottom wall (4), wherebyrecesses disposed on the upstream side develop at least partially in amore proximal region than recesses disposed on the downstream orientedside, with reference to said axial axis (X) of said capsule (1).
 7. Thecapsule (1) according to claim 1, wherein said passageway bottom wall(4) presents a passageway wall thickness (e₄) that is smaller than saidprevailing wall thickness (e₃₁), and respective weakened material region(41) is provided by means of a localized reduction of said passagewaywall thickness (e₄), so that results a region with a weakened thickness(e₄₁) along said first circumferential alignment, thereby improving theopening of said passageway bottom wall (4) when impinged by apressurized upstream flow.
 8. The capsule (1) according to claim 1,wherein said passageway bottom wall (4) is provided as a reduction ofsaid prevailing wall thickness (e₃₁) on a region of circular shape andcentred relative to said entry wall part (31), and wherein said weakenedmaterial region (41) is provided on a region presenting said passagewaywall thickness (e₄) in the proximity of a region presenting saidprevailing wall thickness (e₃₁).
 9. The capsule (1) according to claim1, wherein said passageway bottom wall (4) presents a passageway wallthickness (e₄) that corresponds to a reduction of the thickness of theprevailing wall thickness (e₃₁) of said entry wall part (31), providedon a region of circular shape and on both sides of said entry wall part(31), so that said passageway bottom wall (4) develop on an intercalaryplane between the exterior upstream and downstream oriented surfaces ofsaid entry wall part (31), and wherein said passageway bottom wall (4)is disposed closer to the upstream oriented surface than to thedownstream oriented surface of said entry wall part (31).
 10. Thecapsule (1) according to claim 1, wherein said passageway bottom wall(4) is surrounded upstream by a side wall that extends beyond the planedefined by the wall thickness (e₃) of said entry wall part (31) so thatsaid extended side wall deflects the pressurized flow through theweakened material region (41), and wherein at least said upstreamsurrounding wall develop along an oblique region relative to thedirection of said axial axis (X).
 11. The capsule (1) according to claim1, wherein said weakened material region (41) is provided along at leastmost part, of a circumferential perimeter and presents a first (e₄₁) anda second (e₄₂) weakened thickness, whereby said first weakened thickness(e₄₁) is smaller than said second weakened thickness (e₄₂).
 12. Thecapsule (1) according to claim 1, wherein said weakened material region(41) presents a first weakened thickness (e₄₁) that develops along anarch of circumference comprised between 348° and 325°.
 13. The capsule(1) according to claim 1, wherein said weakened material region (41)presents a first weakened thickness (e₄₁) that is between 0.05 and 0.20times said passageway wall thickness (e₄) of said passageway bottom wall(4).
 14. The capsule (1) according to claim 1, further comprising arecess region (5) provided on the upstream oriented side of said entrywall part (31), whereby said recess region (5) develops from a secondcircumferential alignment in the proximity of said passageway bottomwall (4) and so that defines an intercalary region (6) between saidrecess region (5) and said passageway bottom wall (4), and whereby saidrecess region (5) presents a recess wall thickness (e₅) that is smallerthan the prevailing wall thickness (e₃₁), and bigger than the passagewaywall thickness (e₄) of said passageway bottom wall (4), so that saidpassageway wall (4) is deflected as the pressurized flow breaks saidweakened material region (41).
 15. A system for preparing edibleproducts comprising: a capsule (1) according to claim 1, and anapparatus for preparing edible products based upon said capsule (1) andincluding at least one brewing device (10) that presents two actuationparts (11, 12), wherein said actuation parts (11, 12) are adapted so asto collect said capsule (1), and at least one of said actuation parts(11, 12) can be moved relative to the other so as to engage with theexterior envelope of said capsule (1), wherein an upstream actuationpart (11) comprises injection means (13) adapted for impinging apressurized fluid flow upon said passageway wall (4) provided on anupstream side of said capsule (1), wherein a downstream actuation part(12) comprises discharge means adapted for collecting a beverage fromthe downstream side of said capsule (1), and wherein said injectionmeans (13) are provided as a projection developing downstream andadapted so that exerts a mechanic pressure upon part of said passagewaywall (4) in the proximity of said weakened material region (41),provided as the region between two recesses on opposing sides and thatpresent at least one of different shape and different dimension, so thatsaid passageway bottom wall (4) swivels downstream around a region ofsaid passageway bottom wall (4) opposite to said weakened materialregion (41) as a result of said mechanic pressure.